1、 TIA STANDARD All-IP Core Network Multimedia Domain, IP Multimedia Subsystem Stage 2 TIA-873.002-A (Revision of TIA-873.002) May 2006 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance Copyright Telecommunicatio
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25、 Domain 1 IP Multimedia Subsystem Stage 2 2 3 Contents 4 FOREWORD. VII 5 REVISION HISTORY. VII 6 1 SCOPE.1 7 2 REFERENCES 1 8 3 DEFINITIONS, SYMBOLS AND ABBREVIATIONS .3 9 3.1 Definitions.3 10 3.2 Symbols.3 11 3.3 Abbreviations .3 12 4 IP MULTIMEDIA SUBSYSTEM CONCEPTS4 13 4.0 General4 14 4.1 Relatio
26、nship to CS domain and the IP-Connectivity Access Network 5 15 4.2 IMS services concepts 5 16 4.2.1 Home-network based services5 17 4.2.1.1 Void5 18 4.2.1.2 Support of OSA5 19 4.2.2 Void .5 20 4.2.3 Support of roaming users .5 21 4.2.4 IP multimedia Subsystem Service Control Interface (ISC)7 22 4.2.
27、4a HSS to service platform Interface 9 23 4.2.4b S-CSCF service control model.10 24 4.2.5 The QoS requirements for an IM CN subsystem session.11 25 4.2.6 QoS requirements for IM CN subsystem signalling 13 26 4.2.7 Support of SIP forking .13 27 4.2.7.1 SIP forking.13 28 4.2.7.2 Forking within and out
28、side the IM CN Subsystem 13 29 4.2.7.3 Support for forked requests14 30 4.3 Naming and addressing concepts14 31 4.3.1 Address management .14 32 4.3.2 Void .15 33 4.3.3 Identification of users.15 34 4.3.3.0 General.15 35 4.3.3.1 Private User Identities15 36 4.3.3.2 Public User Identities .15 37 4.3.3
29、.3 Routing of SIP signalling within the IP multimedia subsystem.16 38 4.3.3.3a Handling of dialled number formats 16 39 4.3.3.3b Termination of session with the TEL URI format public user identity16 40 4.3.3.4 Relationship of Private and Public User Identities.16 41 4.3.4 Identification of network n
30、odes .18 42 4.3.5 E.164 address to SIP-URI resolution in an IM CN subsystem.18 43 4.3.6 Public Service Identities.18 44 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-873.0
31、02-A ii 4.4 Signalling concepts.18 1 4.5 Mobility related concepts 19 2 4.6 Roles of session control functions.19 3 4.6.0 General.19 4 4.6.1 Proxy-CSCF.19 5 4.6.2 Interrogating-CSCF .20 6 4.6.2.0 General.20 7 4.6.2.1 Topology Hiding Inter-network Gateway20 8 4.6.3 Serving-CSCF20 9 4.6.4 Breakout Gat
32、eway Control Function .22 10 4.7 Multimedia resource function.22 11 4.8 Security concepts .23 12 4.9 Charging concepts .23 13 4.10 IMS group management concepts23 14 4.10.0 General.23 15 4.10.1 IMS group administration23 16 4.10.2 Group identifiers24 17 5 IP MULTIMEDIA SUBSYSTEM PROCEDURES24 18 5.0
33、General .24 19 5.0a Session-unrelated procedures .24 20 5.1 CSCF related procedures24 21 5.1.0 Establishing IP-Connectivity Access Network bearer for IM CN Subsystem related signalling.24 22 5.1.1 Procedures related to local CSCF discovery24 23 5.1.1.0 General.24 24 5.1.1.1 DHCP/DNS procedure for P-
34、CSCF discovery 25 25 5.1.2 Procedures related to Serving-CSCF assignment 25 26 5.1.2.1 Assigning a Serving-CSCF for a user25 27 5.1.2.2 Cancelling the Serving-CSCF assignment.26 28 5.1.2.3 Re-assignment of a Serving-CSCF 27 29 5.1.3 Procedures related to Interrogating-CSCF.27 30 5.1.4 Procedures rel
35、ated to Proxy-CSCF 27 31 5.1.5 Subscription Updating Procedures.27 32 5.1.5.0 General.27 33 5.1.5.1 Subscription updating information flow 27 34 5.2 Application level registration procedures27 35 5.2.0 General.27 36 5.2.1 Requirements considered for registration 28 37 5.2.1a Implicit registration .2
36、9 38 5.2.1a.0 General.29 39 5.2.1a.1 Implicit registration for UE without ISIM .30 40 5.2.2 Registration flows31 41 5.2.2.1 Requirements to consider for registration31 42 5.2.2.2 Assumptions 31 43 5.2.2.3 Registration information flow user not registered 31 44 5.2.2.4 Re-registration information flo
37、w user currently registered.33 45 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-873.002-A iii 5.2.2.5 Stored information. 35 1 5.3 Application level de-registration proced
38、ures.36 2 5.3.1 Mobile initiated de-registration36 3 5.3.2 Network initiated de-registration .38 4 5.3.2.0 General.38 5 5.3.2.1 Network initiated application (SIP) de-registration, registration timeout 39 6 5.3.2.2 Network initiated application (SIP) de-registration, administrative.40 7 5.3.2.2.0 Ge
39、neral 40 8 5.3.2.2.1 Network initiated de-registration by HSS, administrative.40 9 5.3.2.2.2 Network initiated de-registration by service platform.41 10 5.4 Procedures for IP multi-media sessions .42 11 5.4.0 General.42 12 5.4.1 Bearer interworking concepts 42 13 5.4.2 Interworking with Internet .43
40、 14 5.4.3 Interworking with PSTN43 15 5.4.4 Requirements for IP multi-media session control 43 16 5.4.5 Session path Information44 17 5.4.5.1 Session path information during registration and session initiation.44 18 5.4.5.2 P-CSCF in the session path44 19 5.4.5.3 S-CSCF in the session path45 20 5.4.
41、6 End-user preferences and terminal capabilities45 21 5.4.6.0 General.45 22 5.4.6.1 Objectives 45 23 5.4.6.2 End-user expectations 45 24 5.4.6.3 Mechanism for bearer establishment46 25 5.4.6.4 Session progress indication to the originating UE .48 26 5.4.7 Interaction between QoS and session signalli
42、ng 48 27 5.4.7.0 General.48 28 5.4.7.1 Authorize QoS resources49 29 5.4.7.1a Resource reservation with service based bearer control.49 30 5.4.7.2 Approval of QoS commit.49 31 5.4.7.3 Removal of QoS commit50 32 5.4.7.4 Revoke authorisation for IP-Connectivity Access Network and IP resources .50 33 5.
43、4.7.5 Indication of IP-Connectivity Access Network bearer release.50 34 5.4.7.6 Authorization of IP-Connectivity Access Network bearer modification .50 35 5.4.7.7 Indication of IP-Connectivity Access Network bearer modification 50 36 5.4.8 QoS-assured preconditions.50 37 5.4.9 Event and information
44、distribution 51 38 5.4.9.0 General.51 39 5.4.9.1 Subscription to event notifications.53 40 5.4.10 Void .54 41 5.4.11 Signalling transport interworking 54 42 5.4.12 Configuration and routing principles for Public Service Identities54 43 5.4.12.0 General.54 44 5.4.12.1 PSIs on the originating side54 4
45、5 5.4.12.2 PSIs on the terminating side.54 46 5.4.12.3 Subdomain based PSIs .55 47 5.4.12.4 PSI configuration in the HSS .55 48 5.4.12.5 Requests originated by the AS hosting the PSI56 49 5.4a Overview of session flow procedures56 50 5.5 Serving-CSCF/MGCF to serving-CSCF/MGCF procedures.59 51 5.5.0
46、General.59 52 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-873.002-A iv 5.5.1 (S-S#1) Different network operators performing origination and termination 60 1 5.5.2 (S-S#2
47、) Single network operator performing origination and termination 63 2 5.5.3 (S-S#3) Session origination with PSTN termination in the same network as the S-CSCF65 3 5.5.4 (S-S#4) Session origination with PSTN termination in a different network from the S-CSCF.67 4 5.6 Origination procedures .69 5 5.6
48、.0 General.69 6 5.6.1 (MO#1) Mobile origination, roaming 70 7 5.6.2 (MO#2) Mobile origination, home 73 8 5.6.3 (PSTN-O) PSTN origination .76 9 5.6.4 (NI-O) Non-IMS origination procedure from an external SIP client.77 10 5.6.5 (AS-O) Application Server origination79 11 5.7 Termination procedures80 12
49、 5.7.0 General.80 13 5.7.1 (MT#1) Mobile termination, roaming81 14 5.7.2 (MT#2) Mobile termination, home84 15 5.7.2a (MT#3) Mobile termination, CS domain roaming.87 16 5.7.3 (PSTN-T) PSTN termination .87 17 5.7.4 (NI-T) Non-IMS termination to an external SIP client89 18 5.7.5 (AS-T#1) PSI based Application Server termination direct93 19 5.7.6 (AS-T#2) PSI based Application Ser
